Memristör tabanlı kaotik rössler devresi gerçeklemesi

Abstract

A new simple analog circuit design for Rossler dynamical system  A new memristor emulator circuit design  Suitable implementation by using commercially available integrated circuits for TRNGs Figure A. Circuit schematic of the realized memristive chaotic Rossler circuit and its oscillogram Purpose: A new memristive analog circuit is designed to realize the original Rossler dynamical system, and also a new memristor emulator circuit which provides needed nonlinear flux-charge relationship is designed. Theory and Methods: Designed circuits are analyzed mathematically, and simulated results are showed that all results are compatible with each other. Proposed circuits are implemented on board by using commercially available integrated circuits. Phase portraits for the memristive chaotic circuit are obtained by using an analog and a digital oscilloscope. Results: Experimental results validated the accuracy of theoretical and simulation results. Conclusion: Proposed circuit ideally composed of only three parallel connected basic circuit elements and one DC current source. Thus, mathematical analysis and implementation of the circuit structure are quite simple. Most of the studies that propose a Rossler-based circuit involve FPGA or microcontroller implementations. Because these studies based on an algorithmic process, they can not be used as entropy sources of TRNG circuits. There are not many studies on analog implementation of Rossler attractor in the literature. Because the proposed circuit is analog and noise-effected, it can be used as an entropy source of a TRNG.

CCII current conveyor and dormand-prince-based chaotic oscillator designs for secure communication applications

“…Nowadays, the chaotic signal generators and Chaotic Oscillators (COs) can be created by using different platforms. The circuits constructed by using analog electronic circuit elements can be given as examples for one of the most basic structures of CO structures [14,15]. In these circuits, active circuit elements are used together with basic elements such as resistors and capacitors, which are passive circuit elements [15,16].…”